Second charge to Mortgage

Gillian56

I took a loan out years ago with a company called first plus they have since sold everyone’s loans to a company calf eldbridge, I recently enquired how much was remaining as I’m looking to sell my property and looking to clear the loan. 

I have been advised by the company that they will not allow me to sell my house even though there is more than enough equity in the property to pay them back and more and that I must pay them back before the property is sold. Is this right ?